Controlling the flow of electricity to stabilize the grid
High-energy cells for cheaper electric cars
Storing carbon dioxide in cement.
Nanoparticles boost solar power's prospects.
Mimicking human disease in a dish.
Designing the perfect renewable fuel.
Zhong Lin Wang thinks piezoelectric nanowires could power implantable medical devices and serve as tiny sensors.
Donald Sadoway conceived of a novel battery that could allow cities to run on solar power at night.
A new reactor design could make nuclear power safer and cheaper, says John Gilleland.
Krishna Palem thinks a little uncertainty in chips could extend battery life in mobile devices--and maybe the duration of Moore's Law, too.